John Leyden from The Register writes: "Net infrastructure firm VeriSign has bought security intelligence firm iDefense for $40m in cash. iDefense's 45 employees will join VeriSign in a move designed to bolster its managed security services offering with proactive threat warning and security remediation advice."

"iDefense is best known for its controversial vulnerability contributor program, which rewards hackers for advance notification of unpublished vulnerabilities or exploit code. It's not immediately clear if the program will continue post acquisition."